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CMS data processing workflows during an extended cosmic ray run
(Journal of Instrumentation, 2010)
The CMS Collaboration conducted a month-long data taking exercise, the Cosmic Run At Four Tesla, during October-November 2008, with the goal of commissioning the experiment for extended operation. With all installed detector ...
Performance and operation of the CMS electromagnetic calorimeter
(Journal of Instrumentation, 2010)
The operation and general performance of the CMS electromagnetic calorimeter using cosmic-ray muons are described. These muons were recorded after the closure of the CMS detector in late 2008. The calorimeter is made of ...
Calibration of the CMS drift tube chambers and measurement of the drift velocity with cosmic rays
(Journal of Instrumentation, 2010)
This paper describes the calibration procedure for the drift tubes of the CMS barrel muon system and reports the main results obtained with data collected during a high statistics cosmic ray data-taking period. The main ...
Performance of CMS hadron calorimeter timing and synchronization using test beam, cosmic ray, and LHC beam data
(Journal of Instrumentation, 2010)
This paper discusses the design and performance of the time measurement technique and of the synchronization systems of the CMS hadron calorimeter. Time measurement performance results are presented from test beam data ...
Identification and filtering of uncharacteristic noise in the CMS hadron calorimeter
(Journal of Instrumentation, 2010)
Commissioning studies of the CMS hadron calorimeter have identified sporadic uncharacteristic noise and a small number of malfunctioning calorimeter channels. Algorithms have been developed to identify and address these ...
Performance of the CMS drift-tube chamber local trigger with cosmic rays
(Journal of Instrumentation, 2010)
The performance of the Local Trigger based on the drift-tube system of the CMS experiment has been studied using muons from cosmic ray events collected during the commissioning of the detector in 2008. The properties of ...
Measurement of the muon stopping power in lead tungstate
(Journal of Instrumentation, 2010)
A large sample of cosmic ray events collected by the CMS detector is exploited to measure the specific energy loss of muons in the lead tungstate (PbWO4) of the electromagnetic calorimeter. The measurement spans a momentum ...
Performance of the CMS hadron calorimeter with cosmic ray muons and LHC beam data
(Journal of Instrumentation, 2010)
The CMS Hadron Calorimeter in the barrel, endcap and forward regions is fully commissioned. Cosmic ray data were taken with and without magnetic field at the surface hall and after installation in the experimental hall, ...
Performance study of the CMS barrel resistive plate chambers with cosmic rays
(Journal of Instrumentation, 2010)
In October and November 2008, the CMS collaboration conducted a programme of cosmic ray data taking, which has recorded about 270 million events. The Resistive Plate Chamber system, which is part of the CMS muon detection ...
Time reconstruction and performance of the CMS electromagnetic calorimeter
(Journal of Instrumentation, 2010)
The resolution and the linearity of time measurements made with the CMS electromagnetic calorimeter are studied with samples of data from test beam electrons, cosmic rays, and beam-produced muons. The resulting time ...